Coolant Leak From Heater Core on Mitsubishi Diamante

A coolant leak may develop from the heater core, requiring replacement of the heater core.

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Average mileage: 98,104 (45,000–200,000)
7 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004
28 people reported this problem
17 people shared problem details
The problem is the heater core and I want to know if it has been on recall. 2003 Mitsibushi Galant
i was driving the car after cleaning it and the floor felt wet so i pulled the mat up and it was damp so i pulled the plastic off under the glove box and felt a lot of condonsation on the white box around the heater core
Replaced radiator, but slow coolant leak reoccurred after few months. Foggy front windows, smell of coolant, empty radiator, slight engine overheating. Returned to same mech who replaced radiator, they pressure test and leak check but could not find anything obvious. Finally they diagnosed heater coil leak inside dash. Expensive job to fix, at least $1K. Debating worth it on 12+ year old car, which is otherwise in fantastic driving condition.
I noticed a sweet smell coming from heater, call dealer and he said that it was the heater core. He also said that it's a problem in most Diamantes. I ask if there was a recall, told me no :( I put stop leak in the radiator for now
lots of film on windshield hard to see and hard to get off. Hard to breath with windows closed. Any Recalls on this problem? Very expensive to repair.
syrupy smell, foggy front window, soaked passenger carpet
Coolant leak from heater coil. Defrost not defogging windshield.
heater core had to be replaced
Replaced Heater Core
coolant leak from heater core. returned to dealer. at the time i had a extended warranty that covered the parts and service.
I'm looking to replace the heater core rubber washers (o-ring?) but I can't see to find them anywhere. First I was thinking that the hear core is completely bad but it seems to be free of any signs of coolant around it as if it would have come apart.. And how would you recommend to check to see if it is bad? Thanks
leaking water or right at the floor on the floor of the car inside
over heating in the heater core system an leakin like hell after travalling 5 km??
03 MITSUB DIAM LS --IM HAVING PROBLEMS WITH MY DEFROST AND SMOKE COMING INTO THE VEHICLE FROM THE GLOVE COMPARTMENT AND VENTS. iT STARTED AS MIST NOW ITS FOGGING UP MY WINDOWS. IM HAVING TO CRACK MY PASSENGER WINDOW TO BREATH.
Heater core started leaking, started dripping inside the care as well onto the passenger side floor.
smell of coolant and heating/air flow to lower compartment only blows cold air.
i have the same problem with the heater coil, but mine went out and now it is time for replacement.
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